The Optical Magic Lantern Journal (April 1903)

80 THE OPTICAL magic LANTERN JOURNAL Answers to Correspondence. la a a. a )) = Patent Intelligenee. SJ a ee M.A.S., Jowa. ‘Thanks for letter. received, will write re Standard Diameter. Ads.—Yes, will try. Compiled expressly for this Journal by Messrs. W. P. F.A.A. Ottawa. Attended to last mail. Thompson & Co., Chartered Patent Agents, 322, High ; : Holborn, London, W.C., and at Liverpool, to whom all Fuerst Bros. See present issue. enquiries should be addressed. M. Marx. Yes, by all means. , Magic Lantern Applications. A.L.H. 3, 2, 5, 4, 1, is the order we should select. ; ee No. RECENT PATENT INTELLIGENCE. W. Ottawa.—Asks, Have any trials been made in England, of the vapour lights manufactured in U.S. A.?)) Answer.—We do not know of any, if any of our readers use these lights will they kindly send particulars. 3633. Improved objective for cinematographic and like projection. A. E. KE. Breard. 16th February (date applied for under Patents Act, 1901, 4th August, 1902, being date of application in France.) Complete. They are the best so far. Varies according to 4370, {mprovements in cinematograph apparatus. H. burners; two burners about 120 ¢.p.; three burners H. Moon. 24th February. ° 150 ¢.p. ; four burners 170 to 180 ¢.p. : , a vo 4641. Improvements in cinematograph apparatus. G. 3. ‘ Dreadnought,” Tylar. Fowler, trading as the London Scientific Company and Novelty Supply Stores. 27th Feb. * Tneaned, -DhoMand Tene, 5462. Improvements in methods of producing films 5. “Abingdon,” R. J. Moss & Sons. with changing inscriptious for kinematographs : and in apparatus therefor. C. Spath & E, _ 6.“ Maslite,’? Butcher & Sons. Grabsch. 9th March. Complete. THE “INJECTOR” MIXED JET. (JACKSON’S PATENT). HIS is the only Mixed Gas Jet which will work at full power with coal gas taken direct from the town supply, and oxygen from a cylinder. In order to effect this the oxygen, on its way to the mixing chamber, is made to pass through the small Injector | in the sketch at a pressure of ahout 12 lbs. per square inch. In passing through the Injector it sucks a supply of coal gas from the pipe H, which is connected with the house pipe, and forces it forward through the short pipe T into the mixing chamber M. Here the mixed gases meet the baffle plate B, which has the two-fold effect of silencing the passage of the . gases, and ensuring their complete admixture. The mixed gases then pass through holes in the edge of the plate, and so to the burner. The requisite pressure of oxygen is obtained in the ordinary way by a fine tap on the cylinder, or an automate regulator fitted with a high-pressure ae tes deliver at eee 15 lbs. pressure. : e superiority of this Jet over all others remains fully established. It will yield THE FULL 1,800 TO , 2,000 CANDLE-POWER (so-called) of the ordinary mained jet when taking its supely of coal gas direct from the town’s pipe, or even from a bag withoul any pressure at ali. Ifa town’s supply is not available, it will work just as well with coal gas froma cylinder. We cannot see why ordinary mixed jets should be purchased which cannot offer these alternatives. As for blow-through jets, ejector or otherwise, we do not know why they should be used at all, when with the same economy and convenience of working, the Injector Jet will give two or three times the light. By re-moving the Injector nipple the jet becomes an ordinary mixed jet.’ This can be done whenever it is desired to work with oxygen at low pressure, and coal gas trom a cylinder. The working of the Jet is simpler than that of an ordinary jet. When the H tap is once adjusted, it does not need to be touched again when using towns gas. The turning off or on of the oxygen supply regulates automatically the supply of coal gas. This is a great convenience in actual use, Most existing jets can be fitted with an Injector to enable them to take their coal gas supply from the house pipe. The Jet will in certain cases be sent on approval on deposit of purchase price. Further particulars free on application to MANCHESTER OXYGEN (Brin's Patent) CO., LTD., GREAT MARLBOROUGH STREET, MANCHESTER.